On 2019-06-06 09:31:28 +0200, Andreas Henriksson wrote: > On Wed, Jun 05, 2019 at 03:51:47PM +0000, J. Smith wrote: > > See https://debbugs.gnu.org/30045 (fixed in Emacs 26.2). > > According to the merged upstream duplicates these should be the relevant > fixes: > > http://git.savannah.gnu.org/cgit/emacs.git/commit/?h=emacs-26.2&id=408bf21a8c > http://git.savannah.gnu.org/cgit/emacs.git/commit/?h=emacs-26.2&id=95b77b0451 > http://git.savannah.gnu.org/cgit/emacs.git/commit/?h=emacs-26.2&id=3deaac1bd9 > > Hoping someone can test and verify that fixes the issue....
When using the first two (the third one is a cosmetic change), rendering the character is slow, but Emacs no longer crashes. I've attached the resulting patch. -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
Index: emacs-26.1+1/src/font.c =================================================================== --- emacs-26.1+1.orig/src/font.c +++ emacs-26.1+1/src/font.c @@ -5473,6 +5473,13 @@ Disabling compaction of font caches migh footprint in sessions that use lots of different fonts. */); inhibit_compacting_font_caches = 0; + DEFVAR_BOOL ("xft-ignore-color-fonts", + Vxft_ignore_color_fonts, + doc: /* +Non-nil means don't query fontconfig for color fonts, since they often +cause Xft crashes. Only has an effect in Xft builds. */); + Vxft_ignore_color_fonts = 1; + #ifdef HAVE_WINDOW_SYSTEM #ifdef HAVE_FREETYPE syms_of_ftfont (); Index: emacs-26.1+1/src/ftfont.c =================================================================== --- emacs-26.1+1.orig/src/ftfont.c +++ emacs-26.1+1/src/ftfont.c @@ -764,6 +764,13 @@ ftfont_spec_pattern (Lisp_Object spec, c if (scalable >= 0 && ! FcPatternAddBool (pattern, FC_SCALABLE, scalable ? FcTrue : FcFalse)) goto err; +#if defined HAVE_XFT && defined FC_COLOR + /* We really don't like color fonts, they cause Xft crashes. See + Bug#30874. */ + if (Vxft_ignore_color_fonts + && ! FcPatternAddBool(pattern, FC_COLOR, FcFalse)) + goto err; +#endif goto finish;